| 单词 | vitamin B12 |
| 释义 | vitamin B12 a deep-red crystalline, water-soluble solid, C63H88N14O14PCo, obtained from liver, milk, eggs, fish, oysters, and clams: a deficiency causes pernicious anemia and disorders of the nervous system. Also called cyanocobalamin, cobalamin, extrinsic factor. [1945-50] |
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